The save is already decrypted for use with RPCS3.
An Unknown mode x2 damage x3 crit itemless run of this game is WAY harder then Xillia 1. Goodluck!
Unlike Xillia 1 i think you can just use the save without needing to unlock the title screen. if im wrong, i think you just have to play the intro and make a save first. (I don't remember).
PS: Ludgers voice acting is hiding inside the grade shop (NG+ menu) because a certain story twist would be obvious and spoiled if you actually heard ludger speaking.